Improvement in band-pulleys



J. CHARLTON.

Band-Pulley.

Patented Ma rch23,1875.

JOHN CHARLTON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GEORGE V.GRESSON, OF SAME PLACE.

IMPROVEMENT IN BAND-PULLEYS.

Specification forming part of Letters Patent No. 161.204, dated March23, 1875; application filed July 31, 1874.

To all whom it may concern;

Be it known that I, JOHN CHARLTON, of the city and county ofPhiladelphia, and the State of Pennsylvania, have invented a new anduseful Improvement in Guide or Mule Pulleys and I do hereby declare thefollowing to be a clear and exact description of the nature thereof,sufficient to enable others skilled in the art to which my inventionappertains to fully understand, make, and use the same, reference beinghad to the accompanying drawings, makin g part of this specification, inWhich Figure 1 is a perspective view of the device embodying myinvention. Fig. 2 is a front view of a detached portion. Figs. 3 and 4are central transverse vertical sections of a detached portion. Fig. 5is a perspective view of a modification.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to the class of pulleys which are designed to beset at various angles and positions to guide belts which run twisted, orrequire arrangement relatively to the conditions and circumstances ofmachineshops.

The invention consists in the pulley-carrying head and hanger-post,adapted to permit the universal lateral adjustment of the pulley. Italso consists in adapting the pulley to universal vertical and lateraladjustment. It also consists in so connecting the head with an axialdisk fitted thereon that the pulley may be set at various angles andfirmly held thereat. It also consists in a brace for the hanger-rod,made adjustable relatively to the adjustment of the rotary head.

Referring to the drawings, A represents a cylindrical rod or post, whichis to be suspended vertically from the ceiling of the shop or factory;and B represents a horizontallyarranged head, through which passes therod A, whereby the head is mounted on said rod, and is permitted torotate completely thereon. In one face of the head B there is formed aconical or T or V shaped groove or channel, forming an annular cavity,0, the widest part being within, and to said face is fitted avertically-arranged disk, D, which has an axial motion on the head, andcarries the shaft G,

on which the pulley H is mounted. J represents bolts or screws, whichpass through the disk D, and their heads enter and move in the cavity 0of the head B, as seen in Fig. 4. A certain point of the edge of thegroove 0 is cut away, as at a, to permit the introduction of the widestportion of the heads of the bolts or screws J through the narrow portionof the groove 0. Nuts K are fitted on the bolts or screws J, and. serveto tighten the disk D against the head B.

It will be seen that the pulley H may be adjusted vertically by properlysliding the head up or down on the rod A to full extent of the latter,and likewise adjusted laterally by rotating the head B on the rod A, andthus the pulley may be swung and brought around to any part of the room,there being no limit to the rotation of the head, since there is nobreak in the surface of the rod, and thus no interruption of the rotaryand vertical movements of the head.

When the adjustment is completed the head B is tightened on the rod by ascrew, L, which may pass through the head and bear against the rod orthe head may be split at its back,

and the screws pass through the two parts of the back in order to clampthem on the rod.

When the pulley is at a right angle to the line of the hanger-post, andis to be set at an acute or obtuse angle thereto, the nuts K beingloosened, the disk D is turned until the pulley assumes the requiredangle. The nuts are then tightened, and the disk and head are thusfirmly held to each other.

It will be seen that the shape of the cavity 0 and heads of the screws Jcauses the latter to wedge tightly in the cavity, whereby theimmovability of the disk D, when adjusted, is insured. It will also beseen that the disk D may be rotated completely, and thus bring thepulley to any point of the compass of said disk, and that the cavity 0is completely covered, whereby the entrance of dust thereinto isprevented.

In Fig. 4 the pulley is arranged horizontally; but its adj ustiveoperation is similar to that stated.

M represents a sleeve, which is fitted upon the rod A, and adapted tohave complete rotary motion thereon. To the sleeve is jointed abrace-rod, N, whose upper end is adapted to beconnected to the ceilingof the room in which the pulley is hung.

It will be seen that the brace can be shifted and secured to conform tothe vertical and lateral adjustment of the head B and pulley H, wherebythe belt is in no wise interfered with by or interferes with the braceor its sleeve M.

The sleeve will be held in position by one or more screws, P.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The guide-pulley head B, encircling the suspended rod A, and havinguniversal lateral adjustment thereon, substantially as and for thepurpose set forth.

. W. l .7 ----r. i u...

JOHN CHARLTON. Witnesses:

J OHN A. WIEDERSHEIM, A. P. GRANT.

